Water-treating process.



.J. E. UAP3.

WATER TREATING PROCESS.

APPLICATION FILED MAY 29, 1911.

1,021,761. Patented Apr. 2, 1912.

JOHII' n. cars, or w1mm m asmo1s,

To a;mmMagma; f 3

Be it'knownthat'LJoHn E. Cars, a citizen of tl1e- United"Stat es, and .a resident of Tilmette, in thecounty ofI'Cookand State of Illinois',jha "einvented anew and useful, WVater-Treatin g Process, of which the following is aspvecification. i My present invention has relation to'thefi treatment of water for thepurpose of removing certain; salts therefrom which are" often present and render the water whatis termed hard, and whichnmaterially inter},

' fere with thc'commercial uses to \i'hicl'. it is by filtration. .r a

4 The system is especially designed to treat.

desired to putthe'water.

' As is well known, certain impurities may be largely eliminated by filtration and heating, or by theadditionof alkalis,' such as sodium and calcium hydrates, and other salts,'--which will have the effect 01" precipitatingthe objectionable impurities of the water,- and then eliminating the precipitate.

water-down to zero ornormal, that is to entirely eliminate the"hardness for the purpose mentioned. i i In the addition of chemicals to the water it is-diflicult to so-measure the amount thereof as to exactly neutralize the substances in the water, and it often happens that an excess of the reagent is objectionable. This pa..r-' ticularly the case in the use of water for laundry and dye purposes. In the original Wetting and in the-soaping of the material an excess of alkali -'-is not only not objectionablebut is beneficial as-it facilitates the cleaning and saves soap, but; this excess should be thoroughly removed later to preventits continued presence from injuring-the.material, and such excess interferes with bluing or dying operations. 'The object of my invention is, the provision of a system of water treatment which shall combine the well known modes ot water treatment so that their respective advantages will supplement.- each other.

I accomplish the above object by the process and with the apparatus illustrated in theaccompanying drawing which is an eleva-.

tion of such an apparatus, portions thereof being broken away to expose the interior arrangement of certain of the compartments. In the drawing the reference numeral 1 designates the tankin which the wa'teris treated with chemicals, which may be ofany well known design. Into the chemical tanki .wAmamEmmG m ss.

, Specification of Letters'ratentii 2, and from it the water passesby "gravity to the settlinga n'd filteringetank, 3", where it flowsfirstdownwardly'in' the left. hand i v PatcntedAprfi,1912; v hpplicationyflled Ma -2e',-1911.:' Serial Ito-639,139.,

i 1, the water supply flows throughthepi'pd fchamber,- .4,tothe. filter,'; through which it'flows into the right hand chamber, (SQ At the chemical tank.

where the water is to be -used.

this stage the water has had a large portion,-

. of the hardening salts precipitated andremoved bysettling and filtration, and thewater. is generally slightly alkaline by 're'a- 'son of the chemicals. which it" received in I Extending upwardly w into the compartment, 6, is a'pipe, 7 which I leads directly to the washers ,or the place Also lead-,.

ing from the compartment, 6, is a pipc,-8,-'.'

This leads to .a suitable, circulating mechanism, 9, such as shown in Patent No.--

-918,961,' of April'20, 1909, from which it is caused'to flow upwardly through the pipe, 9, to'the heater,--1O,',fron'1 whence itentersthe hot water compartment, 11, which is in general construction like the compartment 3.

In the tank 11,, the water first flows downwardly through a settling chamber, 12, to a filter, 13, from whence. it goes to the cham-- ber', 14. From the chamber, 14:, a pipe 15, 1s-led to the washers or place where the water is to be used. T he heating facilitates the chemical action and some-of the hardenlngun'aterrals which were not acted upon when 'cold', are thrown down and filtered out. the chamber 1 1, is less alkaline than tainedfrom-the tank, 3. r j Located in convenient proximity to the above described mechanism is a. settling and that obfiltering' tank,-16, similar in structure to the tank, 3, into which water flows by the pipe 17. From. thistank, 16, a pipe, 18, leads to the washers and another pipe '19, leads from said tank, 16, to the circulating mechanism,

9*, from whence it flows to a heater, 19,

similar to the heater 10, and from the heater By reason of this action the water in.

the flow is to the hot water tank, 20, from whence a'pipe, 21, le ads to the washers. The

water-flowing from the tank, 16, has had removed from it by filtration all obj'ection able suspended matter, but as drawn through the pipe, "18, to the Washers it contains the materialswhichrenderthe water-hard; By

using this water with the water coming from either the'tanks 3' or 11, the alkalinity thereof would be entirely neutralized, or by using the hard water as 'a rinse the alkali can be completely'remov'ed from the fabric under treatment The water in tank 20 by reason of the heating to which it has been subjected has had the carbonic acid gas driven from it and the calcium and magnesium carbonates pretty nearly completely precipitated thereby. This heating leaves a slight hardness which cannot be entirely eliminated by heat, butif the'water from tank 20 is run into water from tank 11, one slightly hard and. the other with a slight excess of alkali, as near a complete neutralization will occur as can be secured in a practical manner on a commercial scale. This renders the water practically neutral and suitable for bluing and a great many commercial uses.

The heaters and 19 may be of any suitable construction, but preferably of the Copies of this patent inay be obtained for style shown in Patent No. 949,217 of February 15, 1910. Their general construction is not material in connectionwith this application. The heat is suppliedby a single exhaust steam pipe, 22, having branches, 23

and 24, leading to the .respective heaters.

of by the above arrangement as the cooler.

the Water the greater the condensation and thereby the greater will be the amount of the steam which is drawn into the heater requiring it.

It will be observed that the tanks, 1, and

flow through the system.

five-cents each, by addressing Washington, D. G."

16, into which the Water is first received in the respective sides of the system are located above the other parts so that there .is a head of water always tending to aid the The circulating mechanism requires some slight powerbut the location of the tanks as above described greatly. reduces the power required for circulating the water.

Having thus described my invention what I claim asnew' and desire to secure by'Letters Patent, is

1. Awvater treating process comprising the impregnation ot' a portion of thewater treated with alkali tor the purpose of neutralizing the carbonic acid gas contained therein and the consequent precipitation of substances soluble in a solution of such gas, thetreatment of another portion of the water to be treated with heat to drive ott' the carbonic acid gas to secure a consequent similar precipitation, and the mixture of the portions of Water so respectively treatedto neutralize the excess of alkali and acid present after such separate treatments.

' 2. A water treating process comprising the impregnation of a portion of the water to be treated with alkali, settling and filten ing such treated water, the subsequent heating, settling and filtering thereof in combination with settling and filtering another portion of water, the subsequent heating, settling and filtering thereof, and the mixture of the waters so respectively treated.

In testimony whereof I aifix my signature in the presence of two Witnesses.

JOHN E. CAPS.

.Witnesses:

H. DnLos HIGMAN, BENJ. T. Room-rouse.

the "Commissioner of Patents, 

